Electric switch



J. F. MON-TINE.

ELECTRIC SWITCH.

APPLICATION FILED SEPT. 11, 1919.

1,358,093, I Patented Nov. 9, 1920.

mummy Km J1 Monizne.

UNITED STATESVPHATENT OFFICE,

JosEPH r. MONTINE, or CHICAGO, ILLINOIS.

ELECTRIC SWITCH.

To all whom it may concerns Be it known that I, J osnrrr F..NIONTINE, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Electric Switches, of which the following is a specification.

This invention relates toswitches for con trolling electric circuits, and its object is to provide a switch embodying certain novel features of-construction to be described in detail and 'claimed'hereinafter.

In order that the invention may be better understood, reference is had to the accompanying drawing forming a part of this specification, and in said drawing,

Figure 1 is a central vertical section of the switch;

Fig. 2 is a cross section on the line 22 of Fig. 1 showing the under side of the stationary member of the switch, and

Fig. 3 is a similar section showing the top of the movable member of the switch.

Referring specifically to the drawing, the stationary member of the switch is a disk or plate 5 of suitable insulating material, and the movable member of the switch is a similar disk or plate 6. These two disks are positioned in vertically spaced relation and carry suitable contacts to which the circuit wires are connected. The disk 5 is shown provided with five contacts 7, and the disk 6 is shown provided with three contacts 8. The switch is designed for controlling an electric motor obtaining current from a trolley wire. To two of the contacts 7 are connected motor ground wires, to the third one the motor feed wire to the fourth one the motor reverse feed wire, and the fifth one is a blank. To one of the contacts 8 is connected a wire obtaining current from the trolley feed wire, and to the other two con tacts are connected ground wires. The contacts are so grouped as to permit the connection of two sets of contacts, each wired as described, or in any other manner as de sired. It has been stated that the switch is designed for a motor obtaining current from a trolley wire, but it will be understood that it can also be used in connection with any other electro-responsive apparatus obtaining current from any source.

At 9 is shown a vertical spindle or rod which supports the disks 5 and 6; The spindle is stationary and it is carried by a suitable supporting member, a fragment of Specification of Letters Patent. Patented NOV, 9, 1920,

Application filed September 11, 1919. Serial No. 323,058.

which is shown at 10 in Fig. 1. The upper end of the spindle is threaded and passes through a hole in the member 10 to project from the top thereof, with a nut 11 screwed on the projecting end ofthe spindle.

Between the member 10 and the disk 5 is interposed a block 12 of insulating material having a central opening through which the spindle Q'passes. In that end of the block 12 which is next to the disk 5 is a recess 13 in which seats a metal bushing 14 which projects from the recess and passes through a central opening in the disk 5'and has below the latter an outstanding marginal flange 15.." The spindle 9 passes through the bushing 14 and the latter is made fast to the spindle by across pin 16. Between the flange 15 and the underside of the disk 5 is interposed a washer 17 of insulating material.

The disk 6 is positioned beneath the flanged lower end of the bushing 14, and it is loosely mounted on the spindle 9 so that it may rotate and slide thereon.

The spindle 9 depends at its lower end from the disk 6 and its extremity is threaded to receive two nuts 18 serving as an abutment for the lower end of a spring 19 which is coiled around the spindle. The upper end of the spring 19 abuts against a follower 20 seating against the under side of the disk 6.

The contacts 7 project from the under side of the disk 5, and are adapted to be engaged by the contacts 8, the latter projecting from the top of the disk 6. The distance between the bottom of the bushing 1 1 and the top of the disk 6 is less than the combined length of the projecting ends of the contacts '1' and 8, and hence it will be noted that when the contacts are in alinement and engaging each other, the bushing 1% is spaced from the disk 6, and hence the spring 19 is now pressing the disk 6 upwardly and the contacts are firmly held in engagement with each other by the spring pressure. a r

The disk 6 is operated by a rod 21. The disk 5 carries two spaced depending fingers 22 between which is located a plate 23 fastened to the disk 6 to prevent the latter from being turned too far in either direction. The rod 21 is connected to the stop plate 23. 4

The tension of the spring 19 can be adjusted by the nuts 18, and the parts associated with disk 5"can be securely tightened by operating the nut 11.

I claim:

1. A switch comprising a stationary and a rotatable member, said members beingopposite each other and spaced apart, a sta tionary spindle passing through the memhere, on which spindle the rotatable 1nem her is also slidable, a support for the spindle, a block ofiinsulating material between the support andthe back of the stationary member, the end of the block which is contiguous to the stationary member having a recess, a bushing seating in the recess and passing through the stationary member, through which bushing the spindle passes, and said bushing being fianged'on the, outside of the stationary member, a washer of insulating material between the flange of the bushing and the opposite side of the stationary member, contacts projecting from the opposing sides of the members, and a spring forcing the slidable member inthe direction of the stationary member.

2. A switch comprising a stationary and a rotatable member,- said members being opposite each other and spaced apart, a statlonary spindle pass ng through the members, onwhich spindle the rotatable member is also slidable, a support for the spindle, a block of insulating material between the support and the back of the stationary member, the end of the block which is contiguous to the stationary member having a recess, a bushing seating in the recess and passing through the stationary member, the spindle passing through the bushing, the latterbeingfastened to the spindle, said bushing being flanged on the outside of the stationary member, a washer of insulating material between the flange of the bushing and the opposite side of the stationary member, contacts projecting from the opposing sides of the members, a spring forcing the slidable member in the direction of the sta tionary member, and a nut screwed on the spindle against its support, said support being positioned between the nut and the aforesaid block.

In testimony whereof I afiix my signature.

JOSEPH F. MONTINE; 

